Fastener Torque Requirements
PELLERIN MILNOR CORPORATION
Table 12: Torque Values for Stainless Steel Fasteners Larger Than 5/16-inch
316 Stainless
18-8 Stainless
18-8 Stainless with
Loctite 767
Bolt Size Pound-feet N-m Pound-feet N-m Pound-feet N-m
3/8 x 16 21 28 20 27 12 16
3/8 x 24 23 31 22 29 13 18
7/16 x 14 33 44 31 42 19 25
7/16 x 20 35 47 33 45 20 27
1/2 x 13 45 61 43 58 26 35
1/2 x 20 47 64 45 61 27 37
9/16 x 12 59 81 57 77 34 46
9/16 x 18 66 89 63 85 38 51
5/8 x 11 97 131 93 125 56 75
5/8 x 18 108 150 104 141 62 84
3/4 x 10 132 179 128 173 77 104
3/4 x 16 130 176 124 168 75 101
7/8 x 9 203 275 194 263 116 158
7/8 x 14 202 273 193 262 116 157
1 x 8 300 406 287 389 172 233
1 x 14 271 367 259 351 156 211
1-1/8 x 7 432 586 413 560 248 336
1-1/8 x 12 408 553 390 529 234 317
1-1/4 x 7 546 740 523 709 314 425
1-1/4 x 12 504 683 480 651 288 390
1-1/2 x 6 930 1261 888 1204 533 722
1-1/2 x 12 732 992 703 953 422 572
2. Preparation
WARNING 1 : Fire Hazard—Some solvents and primer products are flammable.
• Use in a well ventilated area.
• Do not use flammable products near ignition sources.
1. Clean all threads with a wire brush, a tap, or a die.
2. Degrease the fasteners and the mating threads with a cleaning solvent. Wipe the parts dry.
Note 2: LocTite 7649 Primer N
™
will remove grease from parts, but it costs more than a standard
organic or petroleum solvent.
3. Prime the fasteners and the mating threads with LocTite 7649 Primer N
™
or equal. Allow the
primer to dry for at least one minute.
3. Application of Threadlocking Compound
CAUTION 2 : Malfunction Hazard—Improper application of threadlocking compounds may
result in fasteners becoming loose from impact, heat, or vibration. Loose fasteners can cause the
equipment to malfunction.
• Read and follow the threadlocking compound manufacturer's instructions and warnings.
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